The symptoms are a bit vague and difficult to localize, but i wonder if you're having some symptoms of night sweats. In conjunction with the muscle and joint pain, it could represent a large number of things like an autoimmune disease such as lupus, menopausal symptoms (don't know your age and assume you're female), infection, anemia, as well as many other diseases. Talk to your primary care doc and have them take a look at your throat as well as your joints. Routine blood work to look at your electrolytes and blood count, thyroid function testing and possibly even an autoimmune panel are all a good start. Best of luck.